$213+ Cheap flights from Seattle (SEA) to Helsinki (HEL)
This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 11/11. Fares are subject to change and may not be available on all flights or dates of travel.
SEA — HEL
Aug 16 — Aug 231
Round-trip
1 adult, Economy
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Find cheap flights from Seattle to Helsinki with Cheapflights
1. Tell us where you want to go
Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”2. Select your favorite providers
We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.3. Compare prices and book
Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.Cheapflights Tip: The best prices from Seattle/Tacoma Intl to Helsinki-Vantaa are usually found in January or October, booked 73 days in advance, depart on a Wednesday or Tuesday and return on a Monday
Cheap flight deals from Seattle to Helsinki
Cheapest
Best
Last-minute
One-way
Cheapest flights from Seattle to HelsinkiExplore the most affordable flight options available from Seattle to Helsinki. Find the lowest fares from popular airlines and budget airlines, with prices last updated on July 17, 2026.
Explore the most affordable flight options available from Seattle to Helsinki. Find the lowest fares from popular airlines and budget airlines, with prices last updated on July 17, 2026.
This Mytrip deal was found by Cheapflights users on 7/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 8/188:00 am
SEA
- HEL
2 stops22h 40m
Multiple Airlines
Tue 8/257:05 am
HEL
- SEA
2 stops24h 02m
Multiple Airlines
Deal found 7/15![Multiple Airlines logo]()
$522
This Ticket deal was found by Cheapflights users on 7/17. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Ticket is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/113:55 pm
SEA
- HEL
2 stops16h 35m
Scandinavian Airlines
Fri 9/256:10 am
HEL
- SEA
1 stop17h 35m
Scandinavian Airlines
Deal found 7/17![Scandinavian Airlines logo]()
$539
This Scandinavian Airlines deal was found by Cheapflights users on 7/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Scandinavian Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 9/63:55 pm
SEA
- HEL
2 stops32h 40m
Scandinavian Airlines
Wed 9/99:15 pm
HEL
- SEA
2 stops50h 30m
Scandinavian Airlines
Deal found 7/16![Scandinavian Airlines logo]()
$544
This Kiwi.com deal was found by Cheapflights users on 7/13. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/53:55 pm
SEA
- HEL
1 stop13h 25m
Scandinavian Airlines
Sat 9/126:10 am
HEL
- SEA
1 stop17h 35m
Scandinavian Airlines
Deal found 7/13![Scandinavian Airlines logo]()
$550
This Mytrip deal was found by Cheapflights users on 7/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 8/263:40 pm
SEA
- HEL
2 stops21h 25m
Multiple Airlines
Wed 9/93:40 pm
HEL
- SEA
2 stops30h 05m
Multiple Airlines
Deal found 7/16![Multiple Airlines logo]()
$557
This Gotogate deal was found by Cheapflights users on 7/12. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Gotogate is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/27:00 pm
SEA
- HEL
1 stop20h 55m
Icelandair
Thu 10/153:00 pm
HEL
- SEA
1 stop15h 40m
Icelandair
Deal found 7/12![Icelandair logo]()
$558
This oojo deal was found by Cheapflights users on 7/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/193:55 pm
SEA
- HEL
2 stops14h 50m
Scandinavian Airlines
Sat 9/263:10 pm
HEL
- SEA
2 stops32h 35m
Scandinavian Airlines
Deal found 7/14![Scandinavian Airlines logo]()
$562
This FlightHub deal was found by Cheapflights users on 7/13. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/53:55 pm
SEA
- HEL
1 stop32h 40m
Scandinavian Airlines
Thu 9/109:05 pm
HEL
- SEA
1 stop26h 40m
Scandinavian Airlines
Deal found 7/13![Scandinavian Airlines logo]()
$572
This Scandinavian Airlines deal was found by Cheapflights users on 7/13. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Scandinavian Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/53:55 pm
SEA
- HEL
1 stop13h 25m
Scandinavian Airlines
Fri 9/116:10 am
HEL
- SEA
1 stop17h 35m
Scandinavian Airlines
Deal found 7/13![Scandinavian Airlines logo]()
$594
Best flights from Seattle to HelsinkiDiscover carefully curated flight deals from Seattle to Helsinki that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated July 17, 2026.
Discover carefully curated flight deals from Seattle to Helsinki that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated July 17, 2026.
This Scandinavian Airlines deal was found by Cheapflights users on 7/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Scandinavian Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 9/63:55 pm
SEA
- HEL
2 stops32h 40m
Scandinavian Airlines
Wed 9/99:15 pm
HEL
- SEA
2 stops50h 30m
Scandinavian Airlines
Deal found 7/16![Scandinavian Airlines logo]()
$544
This Icelandair deal was found by Cheapflights users on 7/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Icelandair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 9/277:00 pm
SEA
- HEL
1 stop18h 00m
Icelandair
Sat 10/173:00 pm
HEL
- SEA
1 stop15h 40m
Icelandair
Deal found 7/15![Icelandair logo]()
$599
This Scandinavian Airlines deal was found by Cheapflights users on 7/13. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Scandinavian Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/53:55 pm
SEA
- HEL
2 stops32h 40m
Scandinavian Airlines
Fri 9/1111:15 am
HEL
- SEA
1 stop12h 30m
Scandinavian Airlines
Deal found 7/13![Scandinavian Airlines logo]()
$601
This Icelandair deal was found by Cheapflights users on 7/13. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Icelandair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/213:40 pm
SEA
- HEL
1 stop12h 20m
Icelandair
Sun 10/252:00 pm
HEL
- SEA
1 stop13h 00m
Icelandair
Deal found 7/13![Icelandair logo]()
$732
This Scandinavian Airlines deal was found by Cheapflights users on 7/13. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Scandinavian Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/83:55 pm
SEA
- HEL
1 stop23h 35m
Scandinavian Airlines
Sat 9/126:10 am
HEL
- SEA
1 stop17h 35m
Scandinavian Airlines
Deal found 7/13![Scandinavian Airlines logo]()
$675
This Scandinavian Airlines deal was found by Cheapflights users on 7/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Scandinavian Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 9/273:55 pm
SEA
- HEL
1 stop13h 25m
Scandinavian Airlines
Mon 10/194:00 pm
HEL
- SEA
2 stops38h 04m
Scandinavian Airlines
Deal found 7/15![Scandinavian Airlines logo]()
$685
This Icelandair deal was found by Cheapflights users on 7/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Icelandair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 10/183:40 pm
SEA
- HEL
2 stops18h 05m
Icelandair
Thu 10/223:00 pm
HEL
- SEA
1 stop12h 55m
Icelandair
Deal found 7/15![Icelandair logo]()
$850
This Scandinavian Airlines deal was found by Cheapflights users on 7/13. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Scandinavian Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/43:55 pm
SEA
- HEL
2 stops16h 35m
Scandinavian Airlines
Fri 9/116:10 am
HEL
- SEA
1 stop17h 35m
Scandinavian Airlines
Deal found 7/13![Scandinavian Airlines logo]()
$762
This Scandinavian Airlines deal was found by Cheapflights users on 7/13. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Scandinavian Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/2110:55 am
SEA
- HEL
2 stops28h 35m
Scandinavian Airlines
Sun 10/254:05 pm
HEL
- SEA
2 stops39h 54m
Scandinavian Airlines
Deal found 7/13![Scandinavian Airlines logo]()
$871
This Scandinavian Airlines deal was found by Cheapflights users on 7/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Scandinavian Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 11/107:20 am
SEA
- HEL
2 stops17h 15m
Scandinavian Airlines
Tue 11/177:00 am
HEL
- SEA
3 stops22h 05m
Scandinavian Airlines
Deal found 7/16![Scandinavian Airlines logo]()
$928
Last-minute flights from Seattle to HelsinkiDiscover last-minute flight deals from Seattle to Helsinki. Data last updated July 17, 2026 and is based on user searches.
Discover last-minute flight deals from Seattle to Helsinki. Data last updated July 17, 2026 and is based on user searches.
This Mytrip deal was found by Cheapflights users on 7/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 8/163:40 pm
SEA
- HEL
2 stops19h 40m
Multiple Airlines
Thu 8/207:05 am
HEL
- SEA
2 stops23h 35m
Multiple Airlines
Deal found 7/15![Multiple Airlines logo]()
$656
This Mytrip deal was found by Cheapflights users on 7/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 8/188:00 am
SEA
- HEL
2 stops22h 40m
Multiple Airlines
Tue 8/257:05 am
HEL
- SEA
2 stops24h 02m
Multiple Airlines
Deal found 7/15![Multiple Airlines logo]()
$522
This oojo deal was found by Cheapflights users on 7/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 8/253:55 pm
SEA
- HEL
2 stops13h 50m
Scandinavian Airlines
Tue 9/17:15 am
HEL
- SEA
2 stops16h 30m
Scandinavian Airlines
Deal found 7/16![Scandinavian Airlines logo]()
$716
This Mytrip deal was found by Cheapflights users on 7/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 8/263:40 pm
SEA
- HEL
2 stops21h 25m
Multiple Airlines
Wed 9/93:40 pm
HEL
- SEA
2 stops30h 05m
Multiple Airlines
Deal found 7/16![Multiple Airlines logo]()
$557
This Gotogate deal was found by Cheapflights users on 7/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Gotogate is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 8/283:40 pm
SEA
- HEL
1 stop12h 20m
Icelandair
Mon 9/73:00 pm
HEL
- SEA
1 stop30h 45m
Icelandair
Deal found 7/15![Icelandair logo]()
$709
This FlightHub deal was found by Cheapflights users on 7/13. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 8/303:55 pm
SEA
- HEL
1 stop23h 35m
Scandinavian Airlines
Mon 9/2111:05 am
HEL
- SEA
2 stops36h 40m
Scandinavian Airlines
Deal found 7/13![Scandinavian Airlines logo]()
$604
This oojo deal was found by Cheapflights users on 7/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 8/307:00 pm
SEA
- HEL
1 stop17h 30m
Icelandair
Mon 9/2111:55 pm
HEL
- SEA
1 stop30h 45m
Icelandair
Deal found 7/15![Icelandair logo]()
$715
One-way flights from Seattle to HelsinkiSearch for one-way flight options from Seattle to Helsinki. Find affordable one-way fares based on user searches. Data last updated July 17, 2026.
Search for one-way flight options from Seattle to Helsinki. Find affordable one-way fares based on user searches. Data last updated July 17, 2026.
This Kiwi.com deal was found by Cheapflights users on 7/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/117:48 am
SEA
- HEL
3 stops27h 42m
Multiple Airlines
Deal found 7/16![Multiple Airlines logo]()
$213
This Kiwi.com deal was found by Cheapflights users on 7/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/97:48 am
SEA
- HEL
3 stops27h 07m
Multiple Airlines
Deal found 7/16![Multiple Airlines logo]()
$227
This Kiwi.com deal was found by Cheapflights users on 7/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/127:48 am
SEA
- HEL
3 stops29h 17m
Multiple Airlines
Deal found 7/16![Multiple Airlines logo]()
$262
This Kiwi.com deal was found by Cheapflights users on 7/13. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/2411:25 pm
SEA
- HEL
3 stops38h 00m
Multiple Airlines
Deal found 7/13![Multiple Airlines logo]()
$271
This Kiwi.com deal was found by Cheapflights users on 7/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 11/137:48 am
SEA
- HEL
3 stops42h 17m
Multiple Airlines
Deal found 7/16![Multiple Airlines logo]()
$273
This Kiwi.com deal was found by Cheapflights users on 7/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 11/107:48 am
SEA
- HEL
3 stops42h 32m
Multiple Airlines
Deal found 7/16![Multiple Airlines logo]()
$306
This Mytrip deal was found by Cheapflights users on 7/12. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 8/253:40 pm
SEA
- HEL
2 stops19h 40m
Multiple Airlines
Deal found 7/12![Multiple Airlines logo]()
$312
Find flight deals from Seattle to Helsinki
Discover tips and strategies to find the most affordable flight options for your journey from Seattle (SEA) to Helsinki (HEL). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated July 17, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $522 (Mytrip) |
One-way from | $213 (Kiwi.com) |
Popular in | June |
Cheapest in | January |
Average price | $1,041 |
Good round-trip deal | $1,297 or less |
Good one-way deal | $394 or less |
Cheapflights Fare Finder
Customize your flight search to find flights from Seattle to Helsinki that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated July 17, 2026.
Use the filters below to find and compare flights from Seattle to Helsinki that are best for you.
Fly from
Fly to
Route
Depart
Return
Cheapest round-trip
SeattleHelsinki
SEA - HEL
SEAHEL
Seattle/Tacoma Intl
Sun 9/6
3:55 pm-10:35 am
2 stops32h 40m
Helsinki-Vantaa
Wed 9/9
9:15 pm-1:45 pm
2 stops50h 30m
$544
SeattleHelsinki
SEA - HEL
SEAHEL
Seattle/Tacoma Intl
Sun 9/27
7:00 pm-11:00 pm
1 stop18h 00m
Helsinki-Vantaa
Sat 10/17
3:00 pm-8:40 pm
1 stop15h 40m
$599
SeattleHelsinki
SEA - HEL
SEAHEL
Seattle/Tacoma Intl
Sat 9/5
3:55 pm-10:35 am
2 stops32h 40m
Helsinki-Vantaa
Fri 9/11
11:15 am-1:45 pm
1 stop12h 30m
$601
SeattleHelsinki
SEA - HEL
SEAHEL
Seattle/Tacoma Intl
Tue 9/8
3:55 pm-1:30 am
1 stop23h 35m
Helsinki-Vantaa
Sat 9/12
6:10 am-1:45 pm
1 stop17h 35m
$675
SeattleHelsinki
SEA - HEL
SEAHEL
Seattle/Tacoma Intl
Sun 9/27
3:55 pm-3:20 pm
1 stop13h 25m
Helsinki-Vantaa
Mon 10/19
4:00 pm-8:04 pm
2 stops38h 04m
$685
Quickest round-trip
SeattleHelsinki
SEA - HEL
SEAHEL
Seattle/Tacoma Intl
Wed 10/21
3:40 pm-2:00 pm
1 stop12h 20m
Helsinki-Vantaa
Sun 10/25
2:00 pm-6:00 pm
1 stop13h 00m
$732
SeattleHelsinki
SEA - HEL
SEAHEL
Seattle/Tacoma Intl
Fri 9/4
3:55 pm-6:30 pm
2 stops16h 35m
Helsinki-Vantaa
Fri 9/11
6:10 am-1:45 pm
1 stop17h 35m
$762
SeattleHelsinki
SEA - HEL
SEAHEL
Seattle/Tacoma Intl
Sun 10/18
3:40 pm-7:45 pm
2 stops18h 05m
Helsinki-Vantaa
Thu 10/22
3:00 pm-5:55 pm
1 stop12h 55m
$850
SeattleHelsinki
SEA - HEL
SEAHEL
Seattle/Tacoma Intl
Wed 10/21
10:55 am-1:30 am
2 stops28h 35m
Helsinki-Vantaa
Sun 10/25
4:05 pm-10:59 pm
2 stops39h 54m
$871
SeattleHelsinki
SEA - HEL
SEAHEL
Seattle/Tacoma Intl
Tue 11/10
7:20 am-10:35 am
2 stops17h 15m
Helsinki-Vantaa
Tue 11/17
7:00 am-7:05 pm
3 stops22h 05m
$928
Showing 1-10 of 20 resultsSorted by cheapest first
Compare providers for flights from Seattle to Helsinki
Provider information is updated monthly. Please note that these providers often have deals for this flight, but the availability may vary on a day-by-day basis on Cheapflights.
Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from Seattle to Helsinki in July.
| Provider | Price Accuracy | Trust Score* |
|---|---|---|
| Price Accuracy1 star | Trust Score*3 stars | |
| Price Accuracy3 stars | Trust Score*3 stars | |
| Price Accuracy3 stars | Trust Score*3 stars | |
| Price Accuracy2 stars | Trust Score*1 star | |
| Price Accuracy- | Trust Score*1 star |
- Most accurate provider: When it comes to deals on Seattle-Helsinki flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Seattle-Helsinki flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from Seattle-Helsinki flight searches over the past month and is updated monthly.
- Most trusted provider: When it comes to deals on Seattle-Helsinki flights, Cheapflights users trust FlightHub the most. FlightHub has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for Seattle-Helsinki flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.
Best time to book a flight from Seattle to Helsinki
Have a flexible travel schedule? Discover the best time to fly to Helsinki from Seattle with our price prediction graph.
SEA-HEL
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.
Cheapflights Insights
Everything you need to know about your flight from Seattle to Helsinki
How far ahead should I book a flight from Seattle to Helsinki?
The best time to book flights from Seattle to Helsinki is 70 days before your desired departure date. The cost of your flight will likely increase significantly if you book two weeks in advance of your flight.
What is the cheapest month to book a flight from Seattle to Helsinki?
Currently, January is the cheapest month in which you can book a flight from Seattle to Helsinki (average of $543). Flying from Seattle to Helsinki in June is currently the most expensive (average of $1,178). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.
What is the cheapest time of day to fly from SEA to HEL?
Find hourly flight availability from Seattle to Helsinki. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated July 17, 2026.
When flying from Seattle to Helsinki, the time of day you decide to fly out makes little to no difference towards the overall price you’ll pay on tickets.
Reviews of airlines servicing Helsinki
Get insights into the airlines that provide service to Helsinki. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Helsinki. Reviews last updated July 17, 2026.
Get a feel of what it's like to fly with Delta,Finnair, andScandinavian Airlines from Seattle to Helsinki by reading reviews from past customers. Users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.
Crew
8.5
Entertainment
7.8
Boarding
8.1
Overall
7.8
Food
7.2
Comfort
7.8
Reviews
1 / 20
10.0
ExcellentAnonymous,May 2026
SEA - KOA
Crew
8.5
Entertainment
7.8
Boarding
8.1
Overall
7.8
Food
7.2
Comfort
7.8
Reviews
1 / 20
10.0
ExcellentAnonymous,May 2026
SEA - KOA
Crew
8.5
Entertainment
7.8
Boarding
8.1
Overall
7.8
Food
7.2
Comfort
7.8
Reviews
1 / 20
10.0
ExcellentAnonymous,May 2026
SEA - KOA
Crew
8.5
Entertainment
7.8
Boarding
8.1
Overall
7.8
Food
7.2
Comfort
7.8
Reviews
1 / 20
10.0
ExcellentAnonymous,May 2026
SEA - KOA
Crew
8.5
Entertainment
7.8
Boarding
8.1
Overall
7.8
Food
7.2
Comfort
7.8
Reviews
1 / 20
10.0
ExcellentAnonymous,May 2026
SEA - KOA
Crew
8.5
Entertainment
7.8
Boarding
8.1
Overall
7.8
Food
7.2
Comfort
7.8
Reviews
1 / 20
10.0
ExcellentAnonymous,May 2026
SEA - KOA
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Find useful and relevant information for your journey from Seattle to Helsinki. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.
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Book flights to Helsinki if you plan to visit one of these locationsVantaa
Lahti
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Top 6 airlines flying from Seattle to Helsinki
Discover the top 6 airlines that operate flights from Seattle to Helsinki. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated July 17, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$323 | Average$548 | FlexibilityNo cancel fee | On-time77% | |
| Cheapest$517 | Average$875 | FlexibilityNo cancel fee | On-time76% | |
| Cheapest$526 | Average$1,020 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$725 | Average$1,148 | FlexibilityNo cancel fee | On-time70% | |
| Cheapest$790 | Average$1,183 | FlexibilityNo cancel fee | On-time76% | |
| Cheapest$852 | Average$1,246 | FlexibilityNo cancel fee | On-time76% |